Coupling for pipes, rods, &amp;c.



.J. E. HARRIMAN, JR. & F. HENDRIOKSON.

COUPLING FOR PIPES, RODS, 6w.

APPLICATION FILED NOV. 2, I908.

Patented Apr. 12,1910.

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MAN, Jr., of Brookline,

pjember of th Coupling of the coupling w JOHN EMERY HARRIMAN, JR., OF BROOKLINEQAND JOHN F. HENDBICKSON,

QUINCY, MASSACHUSETTS.

COUPLING FOB. PIPES, nons, 8w.

Specification of Letters Patent. Patented Apr. 12, 1910.

Application filed November 2, 1908. Serial No. 460,608.

.To all whom'it may concem:

Be it known that we, JOHN EMERY HARRI- in the county of Norfolk and State of Massachusetts, and JOHN F. HENDRIOKSON, of Quincy, in the county of Norfolk and State of Massachusetts, haveinvented certain new and useful Improvements in 'Cou lings for. Pipes, Rods, &c.,.of which the fol owing is a specification. I

This invention relates to pipe couplings and has for its object to provide means whereby two pipes may befirmly connected together by means of an entire friction grip, so that no screw threads are required in any the construction beng such that there can be no leakage at the ]01I1 To these ends the invention consists in the pipe coupling substantially as hereinafter described and claimed.

Of the accompanying drawings, forming a part of this specification,-Figi1re l represents in separate perspective views, the three members of our improved coupling. Fig. 2 represents a longitudinal section showing the members assembled and connecting the abutting ends of two smooth pipes. Fig. 3 represents a section on line 3, 3, of Fig. 2. gig. 4 represents a section on line 4, 4, of

imilar reference characters indicate the same parts in all of the figures.

Two smooth surfaced cylindrical pipes 12, 12 are firmly clamped end to end bymeans ich comprises a central member 13, and two end members 14, 14.

'Each of said members has a circular socket central member.

In the construction here shown, the external eccentric faces of'the central member are formed: by .reducing the end portions of said member,

the said member having an enlarged central portion located between the external faces 16, and provided with a po lygonal surface adapted to engage a wrench. The eccentric internal faces 17 of the end members are formed by enlarging the sockets 3 in said members, the end members having olygonal wrench engaging external suraces. As shown, these coacting external eccentric faces 16 of the central member and eccentric internal faces 17 of the two end members present uninterrupted cylindrical surfaces which enable the members to be relatively rotated in either direction until they bind, which could not be done if any abrupt shoulders were presented by the coacting faces. Theformation of the said members is such that they may be, adjusted with the sockets exactly in alinement to receive-the end ortions of pipes 12, said pipes meeting within the central member 13. When the parts are thus assembled, a slight rotation of each end member relatively to the central member will move the sockets slightly out of alinement and cause the socket walls to take a firm g'rip upon the pipes 12 inserted therein, this action being due to the eccentricity of the faces 16 and 17. i

The ends of the pipes are preferably bev-- meeting of the ends of the bodies 12, and

will prevent leakage at the joint formed by said meeting ends. This joint becomes auto matically sealed by the internal pressure of the fluid passing through the pipes, because the outward pressure against the ring 20, due to the fact that the opposing ends of the pipes cannot exclude such pressure, results in spreading the ring both ways into the angles where the end faces of the two pipes meet the inner wall of the member 13. Therefore close sealing of the joint increases as the internal pressure becomes greater.

It will now be understood that we have provided a coupling by means of-which screw- 1 threading is entirely dispensed with, the

two ipes being simply pressed closely enoug together to compress the packing in the cavity described, and then the rotation f of the end members as describedwill firmly grip the pipes in their relative positions by a. purely rictional hold. If it should" be debefore the other it simply cylindrical bodies connected by said coup-' ling. A simple rotation of the end members in opposite directions simultaneously grips both of said bodies, and if one comes to halt holds the intermediate member while said other end member is being given sufiicient further movement to eflect a final grip which is equal'at both ends of the coup ing. I

Having now described our invention, what we claim is: r

1. A three-part,threadless, coupling comprising a central member having sockets and circular faces surrounding and eccentric to the sockets, and two end members each'hava socket and a circular face eccentricfaces ofall three to the socket, the coacting members presentin uninterrupted -cyl1ndrical.surfaces,the aces of the end members being 'frictionally engaged with the faces sufficient to reverse the rota-- of the central member, that tlie end members maybe rotated either"fdirection relatively to the central-member to cause the. bindin bodies inserted in the cou lin in'alinement..

2. A three-part, threa ess, coupling, comfaces eccentric to the sockets, and two endmembers each having'a socket and a circular of the socket walls on cylindriwl bined with" two externally smooth' cylin- 4 'drical bodiesgsaidcgupling' com risinga 1 central memberhaving sockets an circular' face surrounding and eccentrictotlie .the coacting faces of all three membem .pre-

senting uninterrupted: c lindrical Surfaces-i :3

the faces of the end mem I rs being frictionally engaged with the'faces' of "the central member, so that the end members may. be ro-v tated in either direction relatively tothe cen tral member to cause thebinding of the socket walls on saidbodies inserted in the coupling, each member ofthe coupling being adapted tdreoeive'a .wre'rich. v

testimony whereof we have aflixed our signatures, in presence of two witnesses.

JOHN EMERY HARRIMAN, JR.

* JOHN F. HENDRICKSON.

2- Witnessesz g E. BATCHELDEBY P. W. Pnzzn'rri. 

